Anomalous thermal conductivity in glasses at low temperaturesThis paper has been withdrawn for extensive revision.Douglas Natelson, Danna Rosenberg, D. D. Osheroff·Mar 31, 1999SaveLearn
Gapless Singlet modes in the Kagome strips: A study through DMRG and strong coupling analysisRecently Azaria et al have studied strips of the Kagome-lattice in the weak-coupling limit, where they consist of two spin-half chains on the outside weakly coupled to an array of half-integer spins…Swapan K. Pati, Rajiv R. P. Singh·Mar 30, 1999SaveLearn
Switching between different vortex states in 2-dimensional easy-plane magnets due to an ac magnetic fieldUsing a discrete model of 2-dimensional easy-plane classical ferromagnets, we propose that a rotating magnetic field in the easy plane can switch a vortex from one polarization to the opposite one if…Yuri Gaididei, Till Kamppeter, Franz G. Mertens et al.·Mar 30, 1999SaveLearn
Note on Two Theorems in Nonequilibrium Statistical MechanicsAn attempt is made to clarify the difference between a theorem derived by Evans and Searles in 1994 on the statistics of trajectories in phase space and a theorem proved by the authors in 1995 on the…E. G. D. Cohen, G. Gallavotti·Mar 29, 1999SaveLearn
Atom loss from Bose-Einstein condensates due to Feshbach resonanceIn recent experiments on Na Bose-Einstein condensates [S. Inouye et al, Nature 392, 151 (1998); J. Stenger et al, Phys. Rev. Lett. 82, 2422 (1999)], large loss rates were observed when a time-varying…V. A. Yurovsky, A. Ben-Reuven, P. S. Julienne et al.·Mar 29, 1999SaveLearn
Classical Chaos and its Quantum ManifestationsWe present here the special issue of Physica D in honor of Boris Chirikov. It is based on the proceedings of the Conference "Classical Chaos and its Quantum Manifestations" held in Toulouse…J. Bellissard, O. Bohigas, G. Casati et al.·Mar 29, 1999SaveLearn
Single Spin Measurement using Single Electron Transistors to Probe Two Electron SystemsWe present a method for measuring single spins embedded in a solid by probing two electron systems with a single electron transistor (SET). Restrictions imposed by the Pauli Principle on allowed two…B. E. Kane, N. S. McAlpine, A. S. Dzurak et al.·Mar 25, 1999SaveLearn
Modeling branching and chiral colonial patterning of lubricating bacteriaIn nature, microorganisms must often cope with hostile environmental conditions. To do so they have developed sophisticated cooperative behavior and intricate communication capabilities, such as:…Eshel Ben-Jacob, Inon Cohen, Ido Golding et al.·Mar 25, 1999SaveLearn
Ordered Phase in the Fermionized Heisenberg AntiferromagnetThermal properties of the ordered phase of the spin 1/2 isotropic Heisenberg Antiferromagnet on a d-dimensional hypercubical lattice are studied within the fermionic representation when the…S. Azakov, M. Dilaver, A. M. Oztas·Mar 25, 1999SaveLearn
The Different Effect of Electron-Electron Interaction on the Spectrum of Atoms and Quantum DotsThe electron-electron scattering rate of single particle excitations in atoms is estimated and compared with the corresponding rate in quantum dots. It is found that in alkali atoms single particle…Kinneret Keren, Ady Stern, Uri Sivan·Mar 25, 1999SaveLearn
Coherent stochastic resonance in the case of two absorbing boundariesThe coherent stochastic resonance is observed and studied with multi-step periodic signal in continuous medium having two absorbing boundaries. The general features of this process are exihibited.…Asish K. Dhara, Tapan Mukhopadhyay·Mar 24, 1999SaveLearn
Spin Echo Decay in a Stochastic Field EnvironmentWe derive a general formalism with which it is possible to obtain the time dependence of the echo size for a spin in a stochastic field environment. Our model is based on ``strong…Amit Keren, Ophir M. Auslaender·Mar 24, 1999SaveLearn
Comment on "Superconducting phases in the presence of Coulomb interaction: From weak to strong correlations''We examine the paper basic equations of T. Domański and K.I. Wysokiński [Phys. Rev. B 59, 173 (1999)], who calculated the critical superconducting temperature, Tc, in function of Coulomb…J. J. Rodríguez-Núñez, A. A. Schmidt·Mar 24, 1999SaveLearn
Transverse dipole spin modes in quantum dotsWe have carried out a systematic analysis of the transverse dipole spin response of a large size quantum dot within time-dependent current density functional theory. Results for magnetic fields…E. Lipparini, M. Barranco, A. Emperador et al.·Mar 23, 1999SaveLearn
Spin and Statistics for Quantum Hall Quasi-ParticlesIn two space dimensions the possibilities of fractional spin as well as fractional statistics exist. I examine the relation between fractional spin and statistics for Laughlin quasi-particles in a…Jon Magne Leinaas·Mar 22, 1999SaveLearn
Debye-Waller factor in He => Cu(001) collisions revisited: the role of the interaction potentialsFollowing the recently accumulated information on the vibrational properties of the Cu(001) surface acquired through single- and multiphonon He atom scattering experiments and the concomitant…A. Siber, B. Gumhalter·Mar 22, 1999SaveLearn
Self-organized criticality in linear interface depinning and sandpile modelsThe dynamics of an elastic interface profile h(x,t) under a driving force increasing at rate c, a restored force -epsilon h, and disorder is investigated. Using perturbation theory and functional…Alexei Vazquez, Oscar Sotolongo-Costa·Mar 22, 1999SaveLearn
Real-space local polynomial basis for solid-state electronic-structure calculations: A finite-element approachWe present an approach to solid-state electronic-structure calculations based on the finite-element method. In this method, the basis functions are strictly local, piecewise polynomials. Because the…J. E. Pask, B. M. Klein, C. Y. Fong et al.·Mar 20, 1999SaveLearn
Field dependence of the temperature at the peak of the ZFC magnetizationThe effect of an applied magnetic field on the temperature at the maximum of the ZFC magnetization, MZFC, is studied using the recently obtained analytic results of Coffey et al. (Phys. Rev.…H. Kachkachi, W. T. Coffey, D. S. F. Crothers et al.·Mar 19, 1999SaveLearn
Evolution of the Potential Energy Surface with Size for Lennard-Jones ClustersDisconnectivity graphs are used to characterize the potential energy surfaces of Lennard-Jones clusters containing 13, 19, 31, 38, 55 and 75 atoms. This set includes members which exhibit either one…Jonathan Doye, Mark Miller, David Wales·Mar 19, 1999SaveLearn
On the Exact Solution of Models based on Non-Standard RepresentationsThe algebraic Bethe ansatz is a powerful method to diagonalize transfer-matrices of statistical models derived from solutions of (graded) Yang Baxter equations, connected to fundamental…J. Gruneberg·Mar 19, 1999SaveLearn
Enumeration of the self-avoiding polygons on a lattice by the Schwinger-Dyson equationsWe show how to compute the generating function of the self-avoiding polygons on a lattice by using the statistical mechanics Schwinger-Dyson equations for the correlation functions of the N-vector…P. Butera, M. Comi·Mar 19, 1999SaveLearn
Discrete instability in nonlinear latticesThe discrete multiscale analysis for boundary value problems in nonlinear discrete systems leads to a first order discrete modulational instability above a threshold amplitude for wave numbers beyond…J. Leon, M. Manna·Mar 18, 1999SaveLearn
Exclusion statistics: A resolution of the problem of negative weightsWe give a formulation of the single particle occupation probabilities for a system of identical particles obeying fractional exclusion statistics of Haldane. We first derive a set of constraints…M. V. N. Murthy, R. Shankar·Mar 18, 1999SaveLearn
Mesoscopic Cooperative Emission From a Disordered SystemWe study theoretically the cooperative light emission from a system of N 1 classical oscillators confined within a volume with spatial scale, L, much smaller than the radiation wavelength,…T. V. Shahbazyan, M. E. Raikh, Z. V. Vardeny·Mar 16, 1999SaveLearn